The coalition used land- and sea-based US aircraft as well as Tomahawk cruise missiles.

US Navy via Getty Images
| September 23, 2014

An F/A-18C Hornet, attached to Strike Fighter Squadron (VFA) 87, prepared to launch from the flight deck of the aircraft carrier USS George H.W. Bush.

ROBERT BURCK/US NAVY/HANDOUT
| September 23, 2014

This image made from amateur video posted on an activist social media account showed an explosion in the village of Kfar Derian.

AP/amateur video via AP video
| September 23, 2014

This photo provided by anti-Bashar Assad activist group Edlib News Network (ENN) showed Syrian citizens checking a damaged house that they say was targeted by the coalition airstrikes in the village of Kfar Derian.

AP/Edlib News Network ENN
| September 23, 2014

The US and five Arab nations attacked the Islamic State group’s headquarters in eastern Syria in nighttime raids.